Most of the time you will see some ADs, popup in your Apps or some recommendations to install new Apps at the bottom of your Empty space in your mobile. Which will drain your mobiles daily Bandwidth. by adding this entry, you can reduce wastage of Bandwidth.
Steps to Set Up Private DNS to Block Ads on Android:
Open Settings on your Android device.
Scroll down and tap on Network & Internet (this may vary slightly depending on your phone model).
Tap on Private DNS.
In the Private DNS settings, select Private DNS provider hostname.
Enter one of the following DNS provider hostnames that block ads:
For AdGuard DNS: dns.adguard.com
For Cloudflare DNS with Ad Blocking: 1dot1dot1dot1.cloudflare-dns.com
Note: If you prefer to use another service that blocks ads, you can search for their DNS hostname. If you are using Public Wifi in Cafés or Airport/Train, disable this Private DNS settings, Else you will not Connect to Public Wifi’s.